# Nagano 1st district

Nagano 1st district (長野県第1区, Nagano-ken dai-ikku or simply 長野1区, Nagano-ikku) is a single-member constituency of the House of Representatives in the national Diet of Japan located in Nagano Prefecture.

## List of representatives

| Election | Representative | Party |
| 1996 | Kenji Kosaka | New Frontier |
| 2000 | Kenji Kosaka | Liberal Democratic |
| 2003 | Kenji Kosaka | Liberal Democratic |
| 2005 | Kenji Kosaka | Liberal Democratic |
| 2009 | Takashi Shinohara | Democratic |
| 2012 | Takashi Shinohara | Democratic |
| 2014 | Takashi Shinohara | Democratic |
| 2017 | Takashi Shinohara | Independent |
| 2021 | Kenta Wakabayashi [ja] | Liberal Democratic |
| 2024 | Takashi Shinohara | CDP |

## Election Results

2024 :
| Party | Party | Candidate |
| | CDP | Takashi Shinohara |
| | LDP | Kenta Wakabayashi [ja] |
| | Ishin | Kiyoshi Wakasa |
| Turnout | Turnout | Turnout |
2021 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kenta Wakabayashi | 128,423 | 51.29 | 16.26 |
| | CDP | Takashi Shinohara (Incumbent) (elected by Hokurikushin'etsu PR block) | 121,962 | 48.71 | New |
| Registered electors | Registered electors | Registered electors | 425,440 | | |
| Turnout | Turnout | Turnout | | 59.74 | 2.36 |
| | LDP gain from CDP | LDP gain from CDP | LDP gain from CDP | LDP gain from CDP | LDP gain from CDP |
2017 :
| Party | Party | Candidate | Votes | % | ±% |
| | Independent | Takashi Shinohara (Incumbent) | 131,883 | 54.06 | New |
| | Liberal Democratic | Yutaka Komatsu [ja] (Incumbent-Hokurikushin'etsu PR block) | 85,460 | 35.03 | 0.23 |
| | Innovation | Masayuki Hashimoto | 22,817 | 9.35 | New |
| | Society for Making Nagano Prefecture the Best Economy in Japan | Yukinari Komamura | 18,675 | 1.55 | New |
| Registered electors | Registered electors | Registered electors | 432,700 | | |
| Turnout | Turnout | Turnout | | 57.38 | 6.79 |
| | Independent hold | Independent hold | Independent hold | Independent hold |
2014 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Takashi Shinohara (Incumbent) | 96,333 | 45.82 | 9.22 |
| | Liberal Democratic | Yutaka Komatsu [ja] (Incumbent-Hokurikushin'etsu PR block) (reelected by Hokurikushin'etsu PR block) | 74,137 | 35.26 | 2.56 |
| | Communist | Ryosuke Takeda | 26,903 | 12.80 | 1.70 |
| | Future Generations | Takahito Miyazawa [ja] (Incumbent-Hokurikushin'etsu PR block) | 12,888 | 6.13 | New |
| Registered electors | Registered electors | Registered electors | 425,446 | | |
| Turnout | Turnout | Turnout | | 50.59 | 8.17 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |
2012 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Takashi Shinohara (Incumbent) | 89,400 | 36.60 | 14.67 |
| | Liberal Democratic | Yutaka Komatsu [ja] (elected by Hokurikushin'etsu PR block) | 79,860 | 32.70 | 6.70 |
| | Restoration | Takahito Miyazawa [ja] (elected by Hokurikushin'etsu PR block) | 47,870 | 19.60 | New |
| | Communist | Ryosuke Takeda | 27,119 | 11.10 | 2.57 |
| Registered electors | Registered electors | Registered electors | 427,377 | | |
| Turnout | Turnout | Turnout | | 58.76 | 15.51 |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |
2009 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Takashi Shinohara (Incumbent-Hokurikushin'etsu PR block) | 161,543 | 51.27 | 10.45 |
| | Liberal Democratic | Kenji Kosaka (Incumbent) | 124,136 | 39.40 | 8.04 |
| | Communist | Norihira Yamaguchi | 26,872 | 8.53 | 3.21 |
| | Happiness Realization | Motofumi Yokota | 2,535 | 0.80 | New |
| Registered electors | Registered electors | Registered electors | 429,859 | | |
| Turnout | Turnout | Turnout | | 74.27 | 4.09 |
| | Democratic gain from LDP | Democratic gain from LDP | Democratic gain from LDP | Democratic gain from LDP | Democratic gain from LDP |
2005 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kenji Kosaka (Incumbent) | 140,831 | 47.44 | 2.49 |
| | Democratic | Takashi Shinohara (Incumbent-Hokurikushin'etsu PR block) (reelected by Hokurikushin'etsu PR block) | 121,185 | 40.82 | 1.76 |
| | Communist | Sanae Nakano | 34,869 | 11.74 | 0.73 |
| Registered electors | Registered electors | Registered electors | 430,657 | | |
| Turnout | Turnout | Turnout | | 70.18 | 7.77 |
| | LDP hold | LDP hold | LDP hold | LDP hold |
2003 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kenji Kosaka (Incumbent) | 118,065 | 44.95 | 3.76 |
| | Democratic | Takashi Shinohara (elected by Hokurikushin'etsu PR block) | 111,821 | 42.58 | 11.40 |
| | Communist | Sanae Nakano | 32,757 | 12.47 | 7.64 |
| Registered electors | Registered electors | Registered electors | 429,585 | | |
| Turnout | Turnout | Turnout | | 62.41 | 0.59 |
| | LDP hold | LDP hold | LDP hold | LDP hold |
2000 :
| Party | Party | Candidate | Votes | % | ±% |
| | Liberal Democratic | Kenji Kosaka (Incumbent) | 127,010 | 48.71 | 25.64 |
| | Democratic | Yoshikazu Kanakubo | 81,289 | 31.18 | New |
| | Communist | Sanae Nakano | 52,445 | 20.11 | 12.59 |
| Turnout | Turnout | Turnout | | 63.00 | |
| | LDP hold | LDP hold | LDP hold | LDP hold |
1996 :
| Party | Party | Candidate | Votes | % | ±% |
| | New Frontier | Kenji Kosaka | 118,386 | 41.76 | New |
| | New Party Sakigake | Shusei Tanaka | 78,401 | 27.65 | New |
| | Liberal Democratic | Masatoshi Wakabayashi | 65,403 | 23.07 | New |
| | Communist | Kazuhiro Miyagawa | 21,329 | 7.52 | New |
| Turnout | Turnout | Turnout | | | |